Top portion of an electronic housing



FIG. 1 is a front perspective view of a top portion of an electronic housing showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof.

The broken line showing in FIGS. 1 and 2 of the two enclosed regions and the unshaded regions therein forms no part of the claimed design. The broken line showing of the remainder of the housing is for illustrative purposes and forms no part of the claimed design. 

The ornamental design for a top portion of an electronic housing, as shown and described. 